Earth and Space

2. any celestial body visible (as a point of light) from the Earth at night
7. one complete trip of one object around another object Ex: one trip of Earth around the sun
9. an imaginary circle around the middle of the earth, halfway between the North Pole and the South Pole
11. the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun
13. Planets Mercury, Venus, Earth, Mars
16. Planets Jupiter, Saturn, Uranus, Neptune
17. Moon This is the begining of the cycle where you can't see anything.
19. the center around which something rotates
21. Gibbous This moon phase is when its mostly illuminated but not all the way.
22. A large body in space that orbits a star and does not produce light of its own

1. Quarter This is when half of the sun light is reflected of the moon. About a week into the cycle.
3. the envelope of gases surrounding any celestial body
4. Cresent This is the last phase of the moon in the cycle.
5. Quater This is the last quarter moon in the cycle.
6. Moon This is about 14 days into the cycle, and its fully illuminated.
8. the period of time taken by a particular planet (e.g. Mars) to make a complete rotation on its axis
10. a complete spin on an axis
12. the (usually elliptical) path described by one celestial body in its revolution about another
14. any natural satellite of a planet
15. (physics) the force of attraction between all masses in the universe
18. Gibbous This is when the sun light starts to decrese slowly.
20. Cresent This is when a tiny sliver of sun light is reflected off the moon.